<template>
	<view class="login-container">
		<!-- 提示登录图标 -->
        <uni-icons type="contact-filled" size="100" color="#AFAFAF"></uni-icons>
        
        <!-- 登录按钮 -->
        <button type="primary" class="btn-login" open-type="getUserInfo" @getuserinfo="getUserInfo">一键登录</button>
        
        <!-- 登录提示 -->
        <text class="tips-text">登录后尽享更多权益</text>
	</view>
</template>

<script>
    import { mapState, mapMutations } from 'vuex'
    
	export default {
		data() {
			return {
				
			};
		},
        
        computed: {
            ...mapState('m_user',['redirectInfo'])
        },
        
        methods: {
            ...mapMutations('m_user', ['updataUserinfo', 'updataToken', 'updataRedirectInfo']),
            
            // 用户授权后,获取用户的基本信息
            getUserInfo(e) {
                console.log(e)
                
                if(e.detail.errMsg === 'getUserInfo:fail auth deny') return uni.$showMsg('您取消了登录授权')
                
                console.log(e.detail.errMsg)
                
                this.updataUserinfo(e.detail.userInfo)
                
                this.getToken(e.detail)
            },
            
            // 获取code值函数
            async getToken(info) {
                
                const [err, res] = await uni.login().catch(err=> err)
                console.log(res.code)
                console.log(info)
                
                if(err || res.errMsg !== 'login:ok') return uni.$showMsg('登录失败')
                
                const query = {
                    code: res.code,
                    encryptedData: info.encryptedData,
                    iv: info.iv,
                    rawData: info.rawData,
                    signature: info.signature
                }
                
                const { data: loginResult } = await uni.$http.post('/api/public/v1/users/wxlogin', query)
                
                // if (loginResult.meta.status !== 200) return uni.$showMsg('登录失败！')
                
                // 将token存储到vuex中
                this.updataToken(loginResult.message.token) 
                
                this.uni.navigateBack()
            },
            
            navigateBack() {
                if(this.redirectInfo && this.redirectInfo.openType  === 'switchTab')
                uni.switchTab({
                    url: this.redirectInfo.from,
                    complete: () => {
                        this.updataRedirectInfo(null)
                    }
                })
            }
        }
	}
</script>

<style lang="scss">
    .login-container {
        height: 750rpx;
        background-color: #f8f8f8;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        position: relative;
        
        &::before {
            content: ' ';
            position: absolute;
            bottom: 0;
            left: 0;
            background-color: #FFFFFF;
            width: 100%;
            height: 40px;
            border-radius: 100%;
            transform: translateY(50%);
        }
        
        .btn-login {
            width: 90%;
            border-radius: 100px;
            margin: 15px 0;
            background-color: #C00000;
        }
        
        .tips-text {
            font-size: 12px;
            color: gray;
        }
    }
</style>
